Study on Seasonal Characteristics and Causes of Marine Heatwaves in the South China Sea over Nearly 30 Years DOI Creative Commons

Gao Zhenli,

Wentao Jia,

Weimin Zhang

et al.

Atmosphere, Journal Year: 2023, Volume and Issue: 14(12), P. 1822 - 1822

Published: Dec. 14, 2023

Marine heatwaves (MHWs) are becoming more frequent and intense in many regions around the world, as well China’s marginal seas. However, seasonal characteristics associated physical drivers of MHWs largely unknown. In this study, we analyze, based on multiple reanalysis numerical model data, causes South China Sea (SCS) over a near 30-year period (1991–2022). There exist significant variabilities spatiotemporal features formation mechanisms MHWs. SCS show increasing trends terms frequency, duration, intensity. during summer half-year stronger than winter whole, with them being likely to occur eastern western region half-year. trend exceed those summer. Additionally, find that unusually strong west Pacific subtropical high (WPSH) both half-years. Nevertheless, dominant factors for different varied seasons. According upper ocean temperature equation analysis, surface heat flux anomalies (especially shortwave radiation flux) major effect half-year, while dynamic processes play main role An analysis typical also proves conclusion. Moreover, occurring often accompanied by within mixed-layer depth. The findings imply space–time distribution contrast SCS, rather simply due large-scale circulation anomalies. This may provide useful reference deeper understanding forecasting under seasons weather.

Language: Английский

Contrasting Impacts of Two Types of El Niño on Interannual Variations of Marine Heatwaves in the South China Sea DOI
Ningning Zhang, Jian Lan, Wenjin Sun

et al.

Journal of Geophysical Research Oceans, Journal Year: 2025, Volume and Issue: 130(3)

Published: March 1, 2025

Abstract This study utilizes multiple observational and reanalysis data sets to investigate the contrasting effects of Eastern Pacific (EP) Central (CP) El Niño on interannual variations marine heatwaves (MHWs) in South China Sea (SCS) from developing autumn decaying summer Niño. EP is associated with more frequent, intense, prolonged MHWs throughout its life cycle, while CP linked a general decrease MHW characteristics, except summer. During Niño, an anomalous anticyclone over SCS during induces warming mainly by increasing shortwave radiation diminishing latent heat release, fostering development. The persists into summer, intensified influence western North subtropical high (WNPSH). Reduced are primarily attributed cooling early cessation connected enhanced Ekman upwelling, negative horizontal advection caused cyclone around SCS. fade due northeastward shift WNPSH compared scenario, which reduces ability warm sea surface temperature (SST) evolutions events highlight thermal status as critical factors for occurrence persistence, underscoring necessity assess state preceding SST increases research.

Language: Английский

Citations

1
Global Variability and Future Projections of Marine Heatwave Onset and Decline Rates DOI Creative Commons

Yingping Pan,

Wenjin Sun, Senliang Bao

et al.

Remote Sensing, Journal Year: 2025, Volume and Issue: 17(8), P. 1362 - 1362

Published: April 11, 2025

Marine heatwaves (MHWs) can significantly impact marine ecosystems and socio-economic systems, their severity may increase with global warming. Nevertheless, research on the onset decline rates of MHWs remains limited, historical future variations are not yet fully understood. This study, therefore, analyzes spatiotemporal characteristics MHW by using sea surface temperature data from OISSTv2.1 CMIP6. The results indicate that during period 1982 to 2014, were higher in eddy-active mid-latitude current systems western tropical region but lower subtropical gyres. A remarkably high correlation (0.94) exists between rates; regions also tend have rates. Approximately 49.69% ocean exhibits an increasing trend rates, significant increases observed Eastern Equatorial Pacific. Meanwhile, 92.87% oceanic exhibit Looking ahead (2015~2100), both SSP245 SSP585 scenarios display consistent spatial patterns Kuroshio-Oyashio Extension, Gulf Stream, Antarctic Circumpolar Current, Brazil-Malvinas Confluence relatively Under scenario, than those under scenario. indicates as warming intensifies, more extreme likely occur. finding it is necessary pay attention rate when mitigating its potential impacts.

Language: Английский

Citations

0
Liver transcriptome changes in pearl gentian grouper in response to acute high-temperature stress DOI
Qinhe Yang, Renxie Wu, Yanshan Liang

et al.

Aquaculture, Journal Year: 2024, Volume and Issue: 593, P. 741336 - 741336

Published: July 8, 2024

Language: Английский

Citations

3
Historical Marine Cold Spells in the South China Sea: Characteristics and Trends DOI Creative Commons
Chunhui Li, Wenjin Sun,

Jinlin Ji

et al.

Remote Sensing, Journal Year: 2024, Volume and Issue: 16(7), P. 1171 - 1171

Published: March 27, 2024

Marine cold spells (MCSs) are extreme ocean temperature events impacting marine organisms, yet their characteristics and trends in the South China Sea (SCS) historical period remain unclear. This study systematically analyzes sea surface (SST) MCSs SCS using satellite observation data (OISSTv2.1) from 1982 to 2022. The climatological mean SST ranges 22 °C near Taiwan Strait 29 Nansha Islands, showing notable variations. Annual anomalies demonstrate a heterogeneous spatial trend of approximately 0.21 ± 0.16 °C/decade (p < 0.01) across SCS, indicating an increase over time. MCS analysis uncovers non-uniformity frequency, with higher values Beibu Gulf Hainan Island, longer durations northeastern coastal areas. Statistical indicates normal distributions for frequency duration but skewness intensity cumulative intensity, reflecting values. Winter months exhibit larger occurrence areas intensities, illustrating seasonal variability. Anticipated changes will significantly impact ecological structure functioning SCS.

Language: Английский

Citations

2
Diverse marine heatwave intensity trends in the marginal seas of China DOI
Xiuming Li, Renguang Wu, Panxi Dai

et al.

Theoretical and Applied Climatology, Journal Year: 2024, Volume and Issue: 155(6), P. 5237 - 5250

Published: April 3, 2024

Language: Английский

Citations

2
Understanding the compound marine heatwave and low-chlorophyll extremes in the western Pacific Ocean DOI Creative Commons

Qiaojun Chen,

Delei Li,

Jianlong Feng

et al.

Frontiers in Marine Science, Journal Year: 2023, Volume and Issue: 10

Published: Nov. 29, 2023

The western Pacific Ocean is the global center for marine biodiversity, with high vulnerability to climate change. A better understanding of spatiotemporal characteristics and potential drivers compound heatwaves (MHWs) low-chlorophyll (LChl) extreme events essential conservation management local organisms ecosystems. Here, using daily satellite sea surface temperature model-based chlorophyll concentration, we find that climatological spatial distribution MHW-LChl in total days, duration, intensity exhibits heterogeneous distributions. southwest sections South China Sea (WSCS) Indonesian Seas are hotspots events, days more than 2.5 times higher other sub-regions. Notably, there a trend toward frequent (&gt; 4.2 d/decade), stronger 0.5), longer-lasting 1.4 d/decade) occurrences WSCS. occurrence extremes remarkable seasonal differences, majority these transpiring during winter. Moreover, generally statistically significant increasing trends all properties on both inter-annual timescales. Furthermore, reveal strongly modulated by large-scale modes such as El Niño-Southern Oscillation Dipole Mode Index. Overall, pinpointing their changes help vulnerable communities preparing heightened compounded risks organism ecosystems under

Language: Английский

Citations

6
Impacts of Marine Heatwave Events on Three Distinct Upwelling Systems and Their Implications for Marine Ecosystems in the Northwestern South China Sea DOI Creative Commons

Sihai Liu,

Qibin Lao, Xin Zhou

et al.

Remote Sensing, Journal Year: 2023, Volume and Issue: 16(1), P. 131 - 131

Published: Dec. 28, 2023

Under global warming, the frequency and intensity of marine heatwaves are increasing. However, inhibition atmospheric-forcing (AMHW) on upwelling their impacts ecosystems remain poorly understood. To address this issue, satellite sea surface temperature reanalysis data during 1998–2021 were analyzed in three distinct systems, northwestern South China Sea. The results showed that coastal tide-induced west (W) Hainan Island is primarily suppressed by enhanced stratification AMHW events, since insensitive to wind weakening. Contrarily, wind-driven east (E) northeast (NE) jointly regulated AMHW. Specifically, events have a stronger inhibitory effect phytoplankton growth NE than E. causes could be following: (1) background region E; thus, has higher susceptibility weakening; (2) begins when high-pressure system aligned with coastline upwelling. In region, location center occurrence positioned closer proximity area. Moreover, weakening enhancing changes development Before mature phase AMHW, inhibit growth, while shift stratification-dominated (>85%) occurs decline phase. This study suggests MHW great impact ecosystem, especially upwelling, which should given high attention under warming (with increasing future).

Language: Английский

Citations

6
Changes in marine hot and cold extremes in the China Seas during 1982–2020 DOI Creative Commons
Yan Li, Guoyu Ren, Qingyuan Wang

et al.

Weather and Climate Extremes, Journal Year: 2023, Volume and Issue: 39, P. 100553 - 100553

Published: Feb. 9, 2023

Extremes in sea surface temperature (SST) have the potential to threaten marine biodiversity, ecosystem functions, and regional services. Using OISST v2 data, we analyzed spatial temporal variability of hot cold events China Seas during 1982–2020. Results showed that majority Seas, frequency Hot Days (HDs) Marine heatwaves (MHWs) has significantly increased; severe MHWs (SMHWs) become more intense. Frequency Cold (CDs) cold-spells (MCSs) fallen dramatically; MCSs (SMCSs) weaker. All trend distributions are heterogeneous, with largest magnitudes along coast. Long-term analysis revealed extremes (CDs, MCSs, SMCSs) decreased significantly, while (HDs, MHWs, SMHWs) increased at a higher confidence level faster rate. Asymmetry characterizes tendencies extremes. Further study demonstrated mean SST warming, not variability, was primary driver trends both MHW MCS metrics. MHWs/MCSs related anthropogenic or natural forcing very rapidly post-1998 era.

Language: Английский

Citations

4
Near real-time atmospheric and oceanic science products of Himawari-8/9 geostationary satellites over the South China Sea DOI Creative Commons
Jian Liu, Jingjing Yu,

Chuyong Lin

et al.

Published: Feb. 29, 2024

Abstract. The initial release of near real-time (NRT) atmospheric and oceanic science products from Japanese Himawari-8/9 (H8/9) geostationary (GEO) satellites over the South China Sea (SCS) was unveiled in 2024. primary objective behind crafting these NRT H8/9 satellite is to facilitate weather marine environment monitoring, enhance maritime security, aid ocean navigation, among other purposes. As part this investigation, a novel data processing system devised generate variety regional GEO within temporal resolution 10 minutes gridded 0.05° × November 3, 2022 present. This algorithm built upon preceding FengYun (FY) testbed (FYGAT), which prototype FY-4 meteorological product operational system. These encompass range crucial such as cloud mask, fraction, height, phase, optical microphysical properties, layered precipitable water, sea surface temperature, etc. We subjected rigorous evaluations against high-quality analogous reanalysis spanning four months 2023. validations underscore strong consistency between SCS referenced products. Nevertheless, slight discrepancies were identified, primarily stemming variations sensor/dataset characteristics, retrieval algorithms, geometric conditions. outcomes demonstrate suitability first edition supporting intended quantitative applications. record publicly accessible through File Transfer Protocol (FTP) provided by Southern Marine Science Engineering Guangdong Laboratory (Zhuhai) China. Free access dataset can be found at https://doi.org/10.6084/m9.figshare.25015853 (Liu, 2024).

Language: Английский

Citations

1
Increasing marine heatwaves in the Gulf of Thailand after the global warming hiatus DOI
Parichat Wetchayont, Anindya Wirasatriya, Tadahiro Hayasaka

et al.

Marine Environmental Research, Journal Year: 2024, Volume and Issue: unknown, P. 106570 - 106570

Published: May 1, 2024

Language: Английский

Citations

1